A windless heat and moisture supply energy circulating dust falling system and dust falling method

Abstract

The purpose of this invention is to provide a circulating dust suppression system and method using exhaust air heat and humidity power supply, belonging to the field of ventilation and dust removal technology. It includes a wind tunnel and a thermoelectric power generation system. A condenser is located on one side of the wind tunnel, and a local ventilator is located at the end. An opening is provided between the condenser and the local ventilator, with a solid filter screen at the opening and a water tank at the bottom. The thermoelectric power generation system includes a high-temperature gas storage chamber, a low-temperature liquid chamber, and a thermoelectric power generation module. The upper and lower ends of the thermoelectric power generation module are equipped with heat-sensing and cold-sensing plates, respectively. The high-temperature gas storage chamber and the low-temperature liquid chamber are connected to the heat-sensing and cold-sensing plates via heat-conducting pipes. One end of the wind tunnel is connected to the inlet of the high-temperature gas storage chamber, and the outlet of the high-temperature gas storage chamber is connected to the inlet of the condenser. The outlet of the water tank is connected to the inlet of the low-temperature liquid chamber via a water pump, and the outlet of the low-temperature liquid chamber is connected to a water magnetization system. This invention forms a circulating spray dust suppression system, improving the dust suppression effect and improving the quality of exhaust air from the source.

Description

Technical Field

[0001] This invention belongs to the field of ventilation and dust removal technology, specifically relating to a circulating dust removal system and method that uses exhaust air, heat, and humidity for energy supply. Background Technology

[0002] Spray dust suppression is a common method used in mining faces. However, during spray dust suppression operations, the heat generated by the mining machine and the heat released from breaking up the rock creates a high-temperature and high-humidity environment in the mining area. Local ventilation fans extract this hot and humid air from the mining face to external roadways via ducts. This hot and humid exhaust air from the mining face pollutes the working environment downwind, easily leading to health problems for miners, aging of electrical insulation, and serious hazards such as overheating of equipment. Furthermore, the exhaust air contains a significant amount of usable low-grade heat energy, resulting in substantial waste of this energy.

[0003] Thermoelectric technology converts low-temperature heat energy into electrical energy by creating a stable and significant temperature difference between the two ends of a temperature-sensing material. This achieves the purpose of converting, storing, and utilizing low-temperature heat energy, and has the advantages of zero energy consumption, no noise pollution, zero carbon emissions, and high stability.

[0004] Achieving both exhaust wind pollution control and efficient utilization of low-temperature thermal energy is a critical challenge that needs to be addressed for energy conservation, emission reduction, and green mining in mines. Therefore, researching a circulating dust suppression system and method that combines exhaust wind pollution control and in-situ utilization of exhaust wind thermal energy is of great significance. Summary of the Invention

[0005] The purpose of this invention is to provide a circulating dust suppression system and method that uses exhaust air heat and humidity power. This system effectively reduces the temperature and humidity of exhaust air emissions, while recovering the exhaust air heat energy and converting it into electrical energy for storage, and recovering the water vapor in the exhaust air and converting it into magnetized water for spray dust suppression for recycling.

[0006] The present invention adopts the following technical solution:

[0007] A circulating dust suppression system powered by exhaust heat and humidity includes a ventilation duct and a thermoelectric power generation system. The ventilation duct is located below the mining face, with a condenser on one side and a local ventilator at the end. An opening is provided between the condenser and the local ventilator, with a solid filter screen at the opening and a water tank at the bottom. The thermoelectric power generation system includes a high-temperature gas storage chamber and a low-temperature liquid chamber. Several thermoelectric power generation modules are provided between the high-temperature gas storage chamber and the low-temperature liquid chamber. The upper and lower ends of each thermoelectric power generation module are respectively equipped with heat-sensing plates and cold-sensing plates. The high-temperature gas storage chamber is connected to the heat-sensing plates through a temperature-conducting pipe, and the low-temperature liquid chamber is connected to the cold-sensing plates through a temperature-conducting pipe. One end of the ventilation duct is connected to the inlet of the high-temperature gas storage chamber, and the outlet of the high-temperature gas storage chamber is connected to the inlet of the condenser. The outlet of the water tank is connected to the inlet of the low-temperature liquid chamber through a water pump, and the outlet of the low-temperature liquid chamber is connected to a water magnetization system.

[0008] The water magnetization system includes a water magnetization pipe with an atomizing nozzle at one end. The water magnetization pipe has an inner pipe on its inner side and an outer pipe on its outer side. The water magnetization pipe is divided into four magnetization chambers by a supporting steel plate. Each of the four magnetization chambers has an inner magnet and an outer magnet. The inner magnet is located inside the inner pipe, and the outer magnet is located in the outer pipe and passes through the water magnetization pipe.

[0009] The internal and external pipes are fixed by supporting steel plates.

[0010] The number, size, and spacing of the heat-conducting pipes in the high-temperature gas storage chamber are the same as those in the low-temperature liquid chamber.

[0011] The section of the air duct located between the condenser and the water tank has an inclination angle of three per thousand.

[0012] The condenser is equipped with 6-8 sets of serpentine condenser tubes parallel to the air duct.

[0013] The dust suppression method of the circulating dust suppression system with exhaust air heat and humidity power supply includes the following steps:

[0014] The hot and humid exhaust air drawn in from the mining face by the ventilation duct creates a high-temperature environment in the high-temperature gas storage chamber. The temperature-conducting pipe in the high-temperature gas storage chamber transfers the temperature to the thermal sensing plate of the thermoelectric generator module. The hot and humid exhaust air continues to flow and its temperature decreases after passing through the condenser. The cooled exhaust air is discharged through the local ventilation fan. The cooled condensate flows through the solid filter screen and is collected in the water tank. The water pump pumps the condensate in the water tank to the low-temperature liquid chamber. The temperature-conducting pipe in the low-temperature liquid chamber transfers the temperature to the cold sensing plate of the thermoelectric generator module. The thermoelectric generator module converts the stable temperature difference between the thermal and cold sensing plates at its two ends into electrical energy and stores it in the energy storage device. It then supplies power to the condenser, water pump and local ventilation fan to form an energy supply system.

[0015] The condensate flowing out of the cryogenic liquid chamber enters the water magnetization pipe of the magnetization system. The water magnetization pipe is divided into four magnetization chambers by the supporting steel plate. Under the action of the strong magnetic field formed by the four sets of internal and external magnets, magnetized water is formed and sprayed out by the atomizing nozzle. The magnetized water mist sprayed out by the atomizing nozzle combines with the high temperature and high humidity working environment of the mining face to form a hot and humid airflow, which is then sucked into the ventilation duct again to form a water circulation dust suppression system.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention effectively utilizes the temperature gradient between the exhaust air from the mining face—high-temperature heating followed by condensation and cooling—to generate and store energy, ensuring the power supply for the circulating dust suppression system and other equipment, and offering the advantage of zero energy consumption. After condensation, the exhaust air's temperature decreases, humidity reduces, and the exhaust air emission quality is significantly improved. The condensate formed after condensation is magnetized and flows back to the atomizing nozzles at the mining face, forming a circulating spray dust suppression system, improving dust suppression efficiency and enhancing exhaust air quality from the source. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a circulating dust suppression system for exhaust air heat and humidity power supply according to the present invention;

[0019] Figure 2 This is a schematic diagram of the thermoelectric power generation system of the present invention;

[0020] Figure 3 This is a schematic diagram of the water magnetization system of the present invention;

[0021] In the diagram: 1-ventilation duct, 2-thermal power generation system, 3-thermal power generation module, 4-condenser, 5-solid filter, 6-water tank, 7-water pump, 8-low temperature liquid chamber, 9-external magnet, 10-internal magnet, 11-atomizing nozzle, 12-local ventilator, 13-external pipe, 14-temperature conducting pipe, 15-high temperature gas storage chamber, 16-thermal sensing element, 17-cold sensing element, 18-water magnetization pipe, 19-supporting steel plate, 20-internal pipe, 21-mining face. Detailed Implementation

[0022] The invention will be further described with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a circulating dust suppression system for exhaust air heat and humidity power supply according to the present invention includes a wind duct 1, a water pump 7, an atomizing nozzle 11, a local ventilator 12, a thermoelectric power generation system 2, a condensate storage system, and a water magnetization system; the condensate storage system includes a condenser 4, a solid filter screen 5, and a water tank 6. The condenser 4 is connected to the wind duct 1, and a water tank 6 is installed at the bottom of the wind duct on the downwind side. A solid filter screen 5 is installed at the top inlet of the water tank, and the water outlet of the water tank is connected to the water pump 7.

[0024] like Figure 2 As shown, the thermoelectric power generation system includes a high-temperature gas storage chamber 15, a thermoelectric power generation module 3, and a low-temperature liquid chamber 8. A temperature-conducting pipe 14 is provided below the high-temperature gas storage chamber and is connected to the heat-sensing plate 16 of the thermoelectric power generation module 3. A temperature-conducting pipe 14 is provided above the low-temperature liquid chamber 8 and is connected to the cold-sensing plate 17 of the thermoelectric power generation module 3.

[0025] like Figure 3 As shown, the water magnetization system includes an external magnet 9 and an internal magnet 10, a water magnetization pipe 18, an external pipe 13, a supporting steel plate 19, and an internal pipe 20.

[0026] In this invention, the thermoelectric power generation module is model number TGM-2870.

[0027] The material of the cooling temperature sensor is a ceramic sheet containing 99% alumina.

[0028] The material of the thermal sensing sheet is a ceramic sheet containing 99% alumina.

[0029] A circulating dust suppression method using exhaust air, heat, and moisture power supply includes the following steps:

[0030] The ventilation duct draws hot and humid air from the mining face into a high-temperature gas collection chamber via a local ventilation fan. The high-temperature gas collection chamber transfers temperature to the thermal sensing element of the thermoelectric generator module through a copper heat-conducting pipe. The hot and humid exhaust air flowing out of the high-temperature gas collection chamber rapidly decreases in temperature and humidity after passing through a condenser. The cooled and dehumidified exhaust air is then discharged through the local ventilation fan. Some of the water vapor in the exhaust air is condensed to form condensate, which flows along the ventilation duct with an angle of 0.3% to the filter screen at the top of the water tank. After filtration, the condensate is stored in the water tank. A water pump pumps the condensate from the water tank to a low-temperature liquid storage chamber. The low-temperature liquid storage chamber transfers temperature to the cold sensing element of the thermoelectric generator module through a heat-conducting pipe. The thermoelectric generator module converts the stable temperature difference collected by the thermal and cold sensing elements into electrical energy, which powers the condenser, water pump, and local ventilation fan.

[0031] The condensate flowing from the low-temperature storage chamber passes through the magnetized pipe. The water flow cuts the magnetic field lines of the inner and outer magnets within the water magnetization chamber, thus gaining energy to form magnetized water, which is then transported to the atomizing nozzles at the mining face and sprayed out. While improving dust suppression efficiency at the working face, the magnetized water mist also combines with the high-temperature and high-humidity working environment at the mining face to form a hot and humid airflow, which is then drawn back into the ventilation duct, forming a magnetized water circulation dust suppression system.

Claims

1. A circulating dust suppression system with exhaust air, heat, and moisture supply, characterized in that: The system includes a ventilation duct (1) and a thermoelectric power generation system (2). The ventilation duct (1) is located below the mining face (21). A condenser (4) is provided on one side of the ventilation duct (1), and a local ventilator (12) is provided at the end of the ventilation duct (1). An opening is provided between the condenser (4) and the local ventilator (12), and a solid filter screen (5) is provided at the opening. A water tank (6) is provided at the bottom of the opening. The thermoelectric power generation system (2) includes a high-temperature gas storage chamber (15) and a low-temperature liquid chamber (8). Several thermoelectric power generation modules (3) are provided between the high-temperature gas storage chamber (15) and the low-temperature liquid chamber (8). The thermoelectric power generation module (3) is provided with a heat-sensing plate (16) and a cold-sensing plate (17) at its upper and lower ends respectively. The high-temperature gas storage chamber (15) is connected to the heat-sensing plate (16) through a heat-conducting pipe (14). The low-temperature liquid chamber (8) is connected to the cold-sensing plate (17) through a heat-conducting pipe (14). One end of the air duct (1) is connected to the inlet of the high-temperature gas storage chamber (15). The outlet of the high-temperature gas storage chamber (15) is connected to the inlet of the condenser (4). The outlet of the water tank (6) is connected to the inlet of the low-temperature liquid chamber (8) through a water pump (7). The outlet of the low-temperature liquid chamber (8) is connected to the water magnetization system. The water magnetization system includes a water magnetization pipe (18), with an atomizing nozzle (11) at the end of the water magnetization pipe (18). An internal pipe (20) is provided on the inner side of the water magnetization pipe (18), and an external pipe (13) is provided on the outer side. The water magnetization pipe (18) is divided into four magnetization chambers by a supporting steel plate (19). An internal magnet (10) and an external magnet (9) are respectively provided in the four magnetization chambers. The internal magnet (10) is located in the internal pipe (20), and the external magnet (9) is located in the external pipe (13) and passes through the water magnetization pipe (18).

2. The circulating dust suppression system with exhaust air heat and humidity supply according to claim 1, characterized in that: The internal pipe (20) and the external pipe (13) are fixed by a supporting steel plate (19).

3. The circulating dust suppression system with exhaust air heat and humidity supply according to claim 1, characterized in that: The number, size, and spacing of the heat-conducting pipes (14) in the high-temperature gas storage chamber (15) are the same as those in the low-temperature liquid chamber (8).

4. The circulating dust suppression system with exhaust air heat and humidity power supply according to claim 1, characterized in that: The inclination angle of the portion of the air duct (1) located between the condenser (4) and the water tank (6) is three per thousand.

5. A circulating dust suppression system with exhaust air heat and humidity power supply according to claim 1, characterized in that: The condenser (4) is equipped with 6-8 sets of serpentine condenser tubes parallel to the air duct.

6. A dust suppression method using a circulating dust suppression system with exhaust air heat and humidity power supply as described in any one of claims 1-5, comprising the following steps: The hot and humid exhaust air from the mining face (21) drawn in by the ventilation duct (1) forms a high-temperature environment in the high-temperature storage chamber (15). The temperature-conducting pipe (14) of the high-temperature storage chamber (15) transfers the temperature to the heat-sensing plate (16) of the thermoelectric generator module (3). The hot and humid exhaust air continues to flow and its temperature decreases after passing through the condenser (4). The cooled exhaust air is discharged through the local ventilation fan (12). The cooled condensate flows through the solid filter screen (5) and is collected in the water tank (6). The water pump (7) pumps the condensate in the water tank (6) to the low-temperature liquid chamber (8). The temperature-conducting pipe (14) of the low-temperature liquid chamber (8) transfers the temperature to the cold-sensing plate (17) of the thermoelectric generator module (3). The thermoelectric generator module (3) converts the stable temperature difference between the heat-sensing plate (16) and the cold-sensing plate (17) at both ends into electrical energy and stores it in the energy storage device. Then, it supplies power to the condenser (4), the water pump (7) and the local ventilation fan (12) to form an energy supply system. The condensate flowing out of the low-temperature liquid chamber (8) enters the water magnetization pipe (18) of the magnetization system. The water magnetization pipe is divided into four magnetization chambers by the supporting steel plate. Under the action of the strong magnetic field formed by the four sets of internal magnets (10) and external magnets (9), magnetized water is formed and sprayed out by the atomizing nozzle (11). The magnetized water mist sprayed out by the atomizing nozzle (11) combines with the high temperature and high humidity working environment of the mining face (21) to form a hot and humid airflow while reducing dust. It is then sucked into the air duct (1) again to form a water circulation dust reduction system.

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